Incandescent gas-lamp



(No Model.)

y H. J. BELL. INGANDBSGENT GAS LAMP. No. 416,548. Patented Deo. 3, 1889..

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i UNITED STATES PATENT OFFICE,

HAROLD J. BELL, OF GLOUCESTER CITY,'NEW JERSEY, ASSIGNOR TO THE YELSBACH INCANDESCENT GAS LIGHT COMPANY, OF NEV JERSEY.

INCANDESCENTVGAS-LAM P SPECIFICATION arming part of Letters Patent No. 416,548, rated December 3, 1889.

Application filed December 19I 1888. Serial No. 294,040. (No model.)

To all whom, it may concern,.-

Be it known that I, HAROLD J. BELL, a citizen of the United States, residing at Gloucester City, in the county of Camden and State of New Jersey, have invented new and useful Improvements in Incandescent Gas-Lamps,

of which the following is a specification.

gas-cock that may be adapted for attachment.,

toa gas-fixture in any well-known manner.

The gas-cock 1 communicates with a gasregulator 2, which, as shown iirFig. 1, comprises an inner or lower shell 3, having a central aperture 4., the lower end of which is enlarged and internally screw-threaded for atl tachment to said cock. The aperture ileads into a tubular stem 5, closed at the top, from which rises a vertical guide-stud 6, and having a series of lateral openings or gas=exits 7 in its upper portion, below the closed end or top. The lower portion of the tubular stem 5 is surroundedl by a cup 8, which is preferably integral with the shell 3, and beneath said cup, between it and thebase of the shell 3, is an annular gas-passage 9, into which gas is admitted through an opening 10 in the bottom of said cup. The volume of gas permitted to pass through the opening 10 is controlled by an adjustable regulating-screw 11, located in the base of the regulator. On the tubular stem 5 is supported a bell-shaped iioat 12, which is centrally perforated to engage the guidestud 6, on which it ascends and descends under varying pressures of gas. This bell-shaped float'12 is provided internally with a spider or perforated annular valve 13, Figs. 1 and 2, the inner -periphery of which embraces the tubular perforated stem 5, and is of sufticient Vertical thickness the burners.

to control the gas-openings 7 in the upper part of said tubular stem. The lower end of the bell-shaped float 12 is flared outwardly to form an annular concavo-convex iiange 14, the periphery of which iits within the vertical walls of the cup 8 without binding therein, thereby enabling the float to rise and fall easily without permitting any considerable leakage of gas into the outer chamber 15 of 6o the regulator. This outer chamber 15 is formed by the cup 8, bell-shaped float 12, and a cap or outer shell 16, that is screwed onto the inner or lower shell 3,-which forms the regulator-base. The outer shell or cap 16 65 supports a perforated plate 17, preferably eoncavo-convex, as shown, through which the gas issues in a jet or jets into an atmospheric gas-tube 18, that is supported by the gas-regulator. The action of the ioat 12 and its at- 7o tached valve 13 in controlling the pressure of gas at the burner will be readily understood by observing the course of the arrows in Fig. 1.

On the atmospheric gas-tube 18, above its 7 5 lateral air-inlets 19, is an annular bead 20, on

which is supported an eXtensible bell-shaped shield 21, for protecting said air-inlets from the disturbing influences of external air-currents and for regulating the supply of air to, 8o

In the construction shown this is accomplished by providing the lower end `of the bell-shaped shield 21 with an. inner vertically-movable ring 22, which Iits closely within the shield, and is provided with a 8 5 lowerlaterally-p roj ecting rim 23, that prevents it from slipping entirely within the shield and by which it can be raised and lowered to control the admission of air to the interior of the bell-shaped shield and thence to the air- 9o inlet-s of the atmospheric gas-tube. When the vertically-movable ring 22 is raised more or less, a regulated quantity of air will be admitted to the burner-tube, while by lowering said ring onto the top of the cap 16 of the 95 gas-regulator 2 admission of air to the burnertube will be entirely cut off.

A chimney-gallery 24 and burner 25 are supported on the atmospheric gas-tube 1,8, as shown. The gallery 24 is provided with the roo usual lower ribs-26 and bottom connectingring 27, which serves to hold the stationary portion of the bell-shaped shield 21 in place. The burner 25 may have a tip of any wellknown construction; but, as shown, the burner comprises an inner ring 28, which is integral with or firmly secured to the gallery 24 and forms' a chamber in which is inclosed a lower perforated or gauze diaphragm 29, an upper perforated gauze diaphragm 30 be-` ing supported on the ring 28 by an outer ring 3l, which surrounds the inner ring and, together with the upper diaphragm 30, forms the burner tip and cap.

The burner 25 has a central subsidiary jet 32, which forms the upper termination of a section of by-pass tube 33, thatfis support-ed by the combined gallery and burner. The lower end of this upper tube-section 33 is curved slightly outward to form a joint with a lower by-pass tube-section 34, that is supported byand communicates with the gascock at any convenient point. This gas-cock is fitted with a turn-plug 35, having a passage 3G, which leads to the gas-regulator 2 into the atmospheric gas-.tube 18, and another passage 37, which leads to the by-pass tubes 33 and 34 and to the subsidiary jet 32 at the center of the gas-burner. These gas-passages 36 and 37 are so arranged, as shown, that when the plug 35 is turned to cut off gas from the burner-tube 18 the by-passages 34 and 33 will be opened and the subsidiary jet 32 will instantly become ignited from the heat of the main burner, while by again turning gas into the tube 18 the subsidiary jet will be extinguished and the main burner relighted. The subsidiary jet 32 thus serves as a rcady means for relighting the main burner 25,and when the flame at the latter is extinguished the small subsidiary jet will be useful as a night light or taper.

On the gas-cock is a segmental recess 38, each end of which acts as a stop for a lug 39 on the turn-plug 35, to prevent the plug from being turned so far in either direction as to extinguish the light entirely.

The gallery 25 supports a rod 40, from `which an incandescing-mantle .Ll is suspended.

In Fig. 3 is shown a modification in the arrangement of the by-pass tube 34, which is represented as being supported at the side of the gas'cock instead of at its end, as in Fig. 1, and it is obvious that the by-pass may communicate wit-h the gas-eock at any suitable point.

The gas-cock may be provided with an adjustable screw-valve 42 for the purpose 0f regulating the quantity of gas admitted to the by-pass tube 34, and it may also have a spring 43 to take up wear of the turn-plug.

As the gas-'regulator is located above the gas-cock and detachably connected therewith, it is not convenient to pass the supplytube of the subsidiary jet 32 through the atmospheric gas-tube 18, which is detachably secured to the upper end of said regulator. The tube for supplying the subsidiary jet is therefore located outside the lamp-body, and is made in sections 33 and 34, as before described, so as to permit removal of the burner 25, the atmospheric gas-tube 18, or the regulator 2 from their respective supports without disturbing the attachment of the lower end of the tube 34 to the gas-cock. By this construction the various parts of the lamp can be readily disconnected for cleansing or other purposes.

Vhat I claim as my invention is- I. In an incandescent gas-lamp, the combination of a gas-regulator, an atmospheric gas-tube supported on and communicating with the gas-regulator, and an extensible airregulating shield supported on the atmospheric gas-tube around its lateral air-inlets, and having an inner vertically-movable ring adapted to be lowered onto the top of the gasregulator to cut oif access of air to the atmospheric gas-tube, substantially as described.

2. In an incandescent gas-lamp, the combination of a gas-regulator, an atmospheric gas-tube supported thereon, a burner supported on the atmospheric gas-tube and having a central subsidiary jet, a by-pass tube composed of separable sections 33 and 34, located outside the lamp-body, and a single gascock below the regulator and communieating with and controlling the supply of gas to the burner and subsidiary jet, substantially as described.

3. In an incandescent gas-lamp, the combination of a gas-regulator, an atmospheric gas-tube supported above said regulator, a gas-cock located below the regulator, a burner having a central subsidiary jet, and a by-pass tube located outside the lampbody and connecting the subsidiary jet with the said gascock, substantially as described.

4. In an incandescent gas-lamp, the combination, with an atmospheric gas-tube and a chimney-gallery, of a burner attached to the gallery, and comprising an inner ring, an outer ring, and upper and lower perforated or ganze diaphragms, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HAROLD J. BELL.

Vitn esses W. E. BARROWS, WALDRoN SHAPLEIGH.

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